Piezoelecric shock sensor

A shock sensor sensitive to linear shocks along two orthogonal axes and to rotational shocks in a plane in which the shock sensor lies comprising:

• a first piezoelectric sensor polarized in a first direction angularly offset from the plane in which the shock sensor lies, the first piezoelectric sensor producing a first response to shocks having components along a first and a second orthogonal axis which define a plane perpendicular to the plane in which the shock sensor lies;
• a second piezoelectric sensor polarized in a second direction angularly offset from the plane in which the shock sensor lies, the second direction angularly offset 180.degree. from the first direction, the second piezoelectric sensor producing a second response to shocks having components along the first and second orthogonal axis;
• and,
• an integrated circuit responsive to said first response and said second response and operative to produce;
• a first signal indicating a linear shock to the first piezoelectric sensor;
• a second signal indicating a linear shock to the second piezoelectric sensor;
• and,
• a third signal indicating a rotational shock to the shock sensor generated by combining an output of the first piezoelectric sensor and an output of the second piezoelectric sensor.